Seat frame of vehicle

Abstract

The invention provides a seat frame of a vehicle. The seat framework comprises a seat frame assembly, a backrest assembly and a lateral moving sliding rail, the seat framework further comprises a driving mechanism, and the driving mechanism comprises a first driving mechanism, a second driving mechanism, a third driving mechanism and a fourth driving mechanism, and the first driving mechanism can drive the seat frame assembly to rotate to a folding position relative to the lateral moving sliding rail; the second driving mechanism can drive the seat frame assembly to rotate to a zero-pressure position relative to the lateral movement sliding rail; and the third driving mechanism can drive the seat frame assembly to move to the lateral moving position along the lateral moving sliding rail in the lateral moving direction. According to the seat framework, the multi-direction adjusting function of the seat framework is achieved by integrating different driving mechanisms, and adjustment in all directions in a limited space does not interfere with one another.

Description

Technical Field

[0001] The present disclosure relates to the technical field of accessories for vehicles, and more particularly to a seat frame for a vehicle. Background Art

[0002] With the continuous improvement of consumers' requirements for the functionality and comfort of vehicles, in order to improve the riding comfort of vehicle occupants, for example, vehicle seats have been designed with various adjustment functions, such as adjustable tilt angle of the seat back (folding or flipping into a bed), forward and backward movement of the seat cushion, zero-pressure adjustment of the seat cushion, etc., so that the occupants can flexibly adjust different postures of the seat according to different needs to obtain the best comfort.

[0003] However, there are many components for the existing vehicle seats to achieve the above functions, the structure is complex, and there are cases of interference with adjacent vehicle interior components during use, which affects the use comfort of the occupants. Summary of the Invention

[0004] The purpose of the present disclosure is to provide a seat frame to solve the problems in the prior art. The seat frame integrates the functions of folding or flipping the seat back, zero-pressure adjustment of the seat cushion and lateral movement of the seat cushion, while improving the seat comfort, has a simple structure, reliable operation, is easy to operate and has a low cost.

[0005] To this end, according to the present disclosure, there is provided a seat frame for a vehicle, the seat frame including a seat frame assembly, a backrest assembly and a lateral movement slide rail, wherein the seat frame further includes a driving mechanism, and the driving mechanism includes: a first driving mechanism capable of driving the seat frame assembly to rotate relative to the lateral movement slide rail to a folded position; a second driving mechanism capable of driving the seat frame assembly to rotate relative to the lateral movement slide rail to a zero-pressure position; and a third driving mechanism capable of driving the seat frame assembly to move in the lateral movement direction along the lateral movement slide rail to a lateral movement position.

[0006] According to the above technical concept, the present disclosure may further include any one or more of the following optional forms.

[0007] In some optional forms, the seat frame assembly includes a seat frame side plate, a vertical plate fixedly connected to the upper slide rail of the lateral movement slide rail, and a pair of link assemblies arranged oppositely. Each link assembly includes a first link and a second link respectively pivotally connected to the seat frame side plate and a third link pivotally connected to the first link. The second link is pivotally connected to the vertical plate, and the third link is capable of rotating relative to the vertical plate.

[0008] In some optional forms, the two third links of the pair of link assemblies are fixedly connected by a connecting rod, and the connecting rod is pivotally connected to the vertical plate.

[0009] In some alternative forms, the third link is connected to the second driving mechanism through a transmission mechanism. In the vertical direction, the position of the second driving mechanism is lower than that of the third driving mechanism to prevent interference between the third driving mechanism and the second driving mechanism when the third driving mechanism together with the seat frame assembly moves along the side shift slide rail in the side shift direction.

[0010] In some alternative forms, the transmission mechanism includes a connecting member fixedly connected to the connecting rod, a transfer piece pivotally connected to the second driving mechanism, and a linkage rod fixedly connected to one of the connecting member and the transfer piece and slidably connected to the other of the connecting member and the transfer piece. When the second driving mechanism drives the transfer piece to rotate, the third link is driven to rotate. When the third driving mechanism drives the third link to move in the side shift direction, the connecting member is driven to move relative to the transfer piece in the side shift direction.

[0011] In some alternative forms, a chute is provided on one of the connecting member and the transfer piece, and the linkage rod passes through the chute and is fixedly connected to the other of the connecting member and the transfer piece.

[0012] In some alternative forms, a bushing is provided on the linkage rod or in the chute.

[0013] In some alternative forms, the second driving mechanism is mounted on a mounting bracket fixedly connected to the lower slide rail of the side shift slide rail. The transfer piece is pivotally connected to the mounting bracket, and the second driving mechanism drives the transfer piece to rotate relative to the mounting bracket.

[0014] In some alternative forms, the second driving mechanism includes a motor, a lead screw connected to the motor, and a push rod threadedly connected to the lead screw. The push rod is pivotally connected to the transfer piece. The motor drives the lead screw to rotate and drives the push rod to move on the lead screw to make the transfer piece rotate.

[0015] In some alternative forms, the second driving mechanism includes a motor, a gear connected to the output shaft of the motor, and a rack connected to the transfer piece. The gear meshes with the rack, and the motor drives the gear to rotate and drives the transfer piece to rotate through the movement of the rack.

[0016] In some alternative forms, the second driving mechanism includes a motor, a gear connected to the output shaft of the motor, and a toothed plate connected to the transfer piece. The gear meshes with the toothed plate, and the motor drives the gear to rotate and drives the transfer piece to rotate through the rotation of the toothed plate.

[0017] In some alternative forms, the second driving mechanism is installed on the lower slide rail of the side shift slide rail, and the third driving mechanism is installed on the upper slide rail of the side shift slide rail.

[0018] In some alternative forms, the third connecting rod is pivotally connected to the vertical plate through an angle adjuster.

[0019] In some alternative forms, the second driving mechanism includes a direct drive motor, and the direct drive motor is connected to the angle adjuster through a synchronous rod to drive the angle adjuster to rotate, thereby driving the third connecting rod to rotate relative to the vertical plate.

[0020] In some alternative forms, the second driving mechanism is fixedly installed on the vertical plate or the upper slide rail of the side shift slide rail, and the third driving mechanism is installed on the lower slide rail of the side shift slide rail.

[0021] In some alternative forms, the first driving mechanism includes a motor, a gear connected to the output shaft of the motor, and a rack connected to the first connecting rod or the second connecting rod. The gear meshes with the rack, and the motor drives the gear to rotate and drives the first connecting rod or the second connecting rod to rotate through the movement of the rack, so that the seat frame assembly rotates to the folded position.

[0022] In some alternative forms, the third driving mechanism includes a motor and a gearbox. The gearbox is connected to the motor through a flexible shaft and is connected to a lead screw arranged in the side shift slide rail. The motor drives the gearbox to move relative to the lead screw, so that the seat frame assembly moves along the side shift slide rail in the side shift direction.

[0023] In some alternative forms, the backrest assembly is pivotally connected to the side shift slide rail so that the movement of the seat frame assembly is independent of the movement of the backrest assembly.

[0024] The seat frame of the present disclosure realizes the multi-directional adjustment function of the seat frame by integrating different drive mechanisms, and the adjustments in all directions do not interfere with each other within a limited space. For example, the first drive mechanism can rotate the seat frame assembly relative to the side shift slide rail to a folded position, so that when the backrest assembly is folded, it can be closer to the seat frame assembly and be pressed down at a small angle to be in a folded posture; or the second drive mechanism can rotate the seat frame assembly relative to the side shift slide rail to a zero-pressure position, so that while the backrest assembly flips away from the seat frame assembly, it is in a zero-pressure posture to provide uniform and comfortable support for the occupant, making the parts of the occupant's body in long-term physical contact in a zero-pressure suspension state without pressure when lying flat, reducing body pressure; and, the third drive mechanism can move the seat frame assembly in the side shift direction along the side shift slide rail to a side shift position to realize the lateral translation function, so as to allow the combination of the rear seats to form a large bed scenario when in the folded posture, and to avoid interference with the surrounding component structures when in the zero-pressure posture, ensuring the stability and comfort during use. The seat frame of the present disclosure is structurally compact, simple and reliable, and has low cost, and can be applied to various occasions to meet the diversified needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features and advantages of the present disclosure will be better understood through the following optional embodiments described in detail in conjunction with the drawings, in which the same reference numerals identify the same or similar components, wherein:

[0026] Figure 1A is a schematic diagram of a vehicle seat, showing two seats arranged in parallel in the designed posture;

[0027] Figure 1B is Figure 1A a schematic diagram of the vehicle seat in a conventional folded posture;

[0028] Figure 2 is a side view schematic diagram of the seat frame in the designed posture according to an embodiment of the present disclosure;

[0029] Figure 3 is Figure 2 a schematic diagram of the seat frame assembly of the seat frame in the designed posture;

[0030] Figure 4 is an exploded schematic diagram of the seat frame assembly;

[0031] Figure 5 is a partial schematic diagram of the seat frame assembly, in which the third drive mechanism is omitted;

[0032] Figure 6A is a schematic diagram of the third link, the second drive mechanism and the transmission mechanism, Figure 6B similar to Figure 6A showing a schematic diagram of the transmission mechanism of another embodiment;

[0033] Figure 7A is Figure 2 a simplified schematic diagram of the seat frame of

[0034] Figure 7B in the design posture; Figure 6A Similar to

[0035] Figure 8A is Figure 1A a schematic diagram of the vehicle seat of

[0036] Figure 8B in the side-shift folding posture based on the seat frame of the present disclosure; Figure 8A is

[0037] Figure 9A a schematic diagram of the vehicle seat in the side-shift folding posture and spliced with the rear seat to form a bed; Figure 8A is

[0038] Figure 9B a side view schematic diagram of the seat frame of Figure 9A in the side-shift folding posture;

[0039] Figure 10A is Figure 9A a simplified schematic diagram of the seat frame of

[0040] Figure 10B in the side-shift folding posture; Figure 7B Similar to

[0041] Figure 11A is Figure 1A a schematic diagram of the vehicle seat of

[0042] Figure 11B in the side-shift lying flat posture based on the seat frame of the present disclosure; Figure 11A is

[0043] Figure 12A a side view schematic diagram of the vehicle seat in the side-shift lying flat posture; Figure 11A is

[0044] Figure 12B a side view schematic diagram of the seat frame in the lying flat posture and in the side-shift zero-pressure posture; Figure 12A is

[0045] Figure 13A a schematic diagram of the seat frame assembly of Figure 12A in the side-shift zero-pressure posture;

[0046] Figure 13B Similar to Figure 7B it shows a schematic diagram in the side-shift zero-pressure posture;

[0047] Figure 14 and Figure 15 Similar to Figure 7A it shows different embodiments of the second driving mechanism respectively;

[0048] Figure 16 Similar to Figure 4 it shows an exploded schematic diagram of the seat frame assembly of the seat skeleton according to another embodiment of the present disclosure;

[0049] Figure 17 is Figure 16 a schematic diagram of the side-shift slide rail and the long slide rail in

[0050] Figure 18 is Figure 17 a schematic diagram with the seat frame assembly arranged on the side-shift slide rail and the long slide rail;

[0051] Figure 19 is Figure 18 a side view schematic diagram;

[0052] Figure 20A is Figure 19 a simplified schematic diagram of the seat skeleton with the seat frame assembly having

[0053] Figure 20B is Figure 20A a simplified schematic diagram of the seat skeleton in the side-shift folding posture;

[0054] Figure 20C is Figure 20A a simplified schematic diagram of the seat skeleton in the side-shift zero-pressure posture;

[0055] Figure 21A Similar to Figure 20A it shows another embodiment of the second driving mechanism;

[0056] Figure 21B is Figure 21A a simplified schematic diagram of the seat skeleton in the side-shift folding posture;

[0057] Figure 21C is Figure 21A a simplified schematic diagram of the seat skeleton in the side-shift zero-pressure posture;

[0058] Figure 22A Similar to Figure 20A it shows another embodiment of the second driving mechanism;

[0059] Figure 22B is Figure 22A a simplified schematic view of the seat frame in a side-shift folding posture;

[0060] Figure 22C is Figure 22A a simplified schematic view of the seat frame in a side-shift zero-pressure posture;

[0061] Figure 23A Similar to Figure 20A it shows the second drive mechanism of another embodiment;

[0062] Figure 23B is Figure 23A a simplified schematic view of the seat frame in a side-shift folding posture;

[0063] Figure 23C is Figure 23A a simplified schematic view of the seat frame in a side-shift zero-pressure posture. Detailed implementation mode

[0064] The implementation and use of the embodiments are discussed in detail below. However, it should be understood that the specific embodiments discussed are only exemplary illustrations of specific ways of implementing and using the present disclosure, and do not limit the scope of the present disclosure. In the description, the expressions of the structural positions of each component, such as up, down, top, bottom, etc., are not absolute but relative. When each component is arranged as shown in the figure, these directional expressions are appropriate, but when the positions of each component in the figure change, these directional expressions also change accordingly.

[0065] In this document, expressions such as "including" or similar expressions synonymous therewith, such as "having", are open-ended and do not exclude additional unlisted elements or functions.

[0066] In this document, terms such as "first", "second", "third", etc. are not used to limit the order and the number of components, unless otherwise specified.

[0067] In this document, unless otherwise specifically defined, terms such as "connected" and "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. The term "fixed connection" can be understood as a fixed connection achieved by any means, including but not limited to welding or other fixed connections through fasteners. For those skilled in the art, the specific meanings of the above terms in this document can be understood according to specific circumstances.

[0068] It should be understood that although the embodiments of the seat frame and seat of the present disclosure described in conjunction with the accompanying drawings are described as being applied to vehicles, the term "vehicle" mentioned herein includes, but is not limited to, vehicles, ships, airplanes, etc. Among them, "vehicle" includes fuel vehicles, hybrid vehicles, electric vehicles, hydrogen-powered vehicles, etc., and can be various vehicle models, which are not limited herein.

[0069] To improve the riding comfort of vehicle occupants, seats used in existing vehicles usually have various adjustment functions. For example, the tilt angle of the seat back can be adjusted, the seat cushion can be moved forward and backward, and the zero-pressure adjustment of the seat cushion can be performed, etc., so that the occupants can flexibly adjust different postures of the seat according to different needs. However, when implementing these adjustment functions, there are situations where the seat interferes with adjacent vehicle interior components or the components of the seat frame itself, affecting the use comfort of the occupants. For example, when the seat back needs to be folded, as Figure 1A and Figure 1B shown, the seat back usually cannot achieve a small-angle folding effect, that is, the angle between the seat back and the seat cushion is usually greater than 15 degrees, which cannot adapt to the scenario of splicing with the rear seat to form a bed after the seat back is folded forward. Another example is that when the seat back needs to be flipped backward to form a bed, especially when the seat has a zero-pressure function, the backward flipping of the seat back and the zero-pressure lifting of the seat cushion will interfere with the vehicle body side wall, so that the lying flat posture or zero-pressure posture cannot be achieved smoothly. The inventor found that for the distance between vehicle seats, as Figure 1A shown, if the two seats can be moved laterally closer to reduce the distance between the two seats, it can effectively avoid the interference between the backward flipping of the seat back and the zero-pressure lifting of the seat cushion and the vehicle body side wall. Further, by reasonably arranging the drive mechanisms for realizing the folding, zero-pressure, and side-shifting functions, it is also possible to achieve a smaller-angle folding of the seat back in the forward-folded posture of the seat back. For example, the angle between the seat back and the seat cushion is less than 5 degrees, so that a large-bed effect can be obtained by splicing the two seats with the rear seat.

[0070] Therefore, the present disclosure aims to propose a seat frame. By providing drive mechanisms for realizing the folding, zero-pressure, and side-shifting functions, and optimizing the layout and linkage relationship of each drive mechanism, the seat with this seat frame can realize diversified functions while improving the use comfort of the occupants. It should be understood that the functions realized by the seat frame hereinafter are exemplarily described by side-shifting combined with folding or side-shifting combined with zero-pressure. Depending on different needs, the scenarios applicable to the seat frame based on the concept of the present disclosure include, but are not limited to, side-shifting, folding, zero-pressure, side-shifting combined with folding, side-shifting combined with zero-pressure, etc.

[0071] Specifically in combination with Figures 2 to 13BIn an embodiment shown, the seat frame of the present disclosure includes a seat frame assembly 200, a backrest assembly 300, and a side shift slide rail 531. The side shift slide rail 531 is attached to a long slide rail 100 arranged along the longitudinal direction X of the vehicle so that the entire seat frame is adapted to move along the long slide rail 100 in the longitudinal direction X. Here, the longitudinal direction of the vehicle is along the traveling direction of the vehicle, also referred to as the front-back direction, to adapt to the front-back position adjustment of the seat. The side shift slide rail 531 extends along the side shift direction Y. The seat frame assembly 200 is attached to the side shift slide rail 531 and can move along the side shift slide rail 531 in the side shift direction Y. Here, the side shift direction Y is the width direction or the lateral direction of the vehicle, also referred to as the left-right direction, to adapt to the left-right position adjustment of the seat. It can be conceived that the side shift slide rail 531 can also be directly installed on the vehicle body floor. The side shift direction Y can also be an oblique direction forming an angle with the length direction of the vehicle to adapt to the oblique position adjustment of the seat. The seat frame further includes a driving mechanism. The driving mechanism includes: a first driving mechanism 510 that can drive the seat frame assembly 200 to rotate relative to the side shift slide rail 531 to a folded position; a second driving mechanism 520 that can drive the seat frame assembly 200 to rotate relative to the side shift slide rail 531 to a zero-pressure position; and a third driving mechanism 530 that can drive the seat frame assembly 200 to move in the side shift direction Y to a side shift position. According to the concept of the present disclosure, regardless of the position of the seat frame assembly 200 during movement, the respective driving mechanisms do not interfere with each other.

[0072] Specifically, in the embodiment shown, the side shift slide rail 531 includes an upper slide rail 532 and a lower slide rail 533 that are slidably engaged with each other. Here, "upper" and "lower" are with respect to the vertical direction Z. The seat frame assembly 200 includes a seat frame side plate 230, a vertical plate 240 fixedly connected to the upper slide rail 532 of the side shift slide rail 531, and a pair of link assemblies disposed opposite each other in the vehicle width direction. Figure 3 and Figure 4 This pair of link assemblies is a symmetric structure. For the sake of simplicity, only one side of the link assembly will be described hereinafter. Specifically, the link assembly includes a first link 210 and a second link 220. The first link 210 is pivotally connected to a third link 250. The second link 220 is pivotally connected or hinged to the vertical plate 240. Among them, the third link 250 is configured to be able to rotate relative to the vertical plate 240. In the embodiment shown, two third links 250 respectively arranged on both sides of the seat frame assembly are fixedly connected by a connecting rod 251. The connecting rod 251 is pivotally connected to the vertical plate 240.

[0073] In some embodiments, the seat frame may further include a seat pan 400, and the seat pan 400 is fixedly connected above the seat frame assembly 200. Thus, the seat frame assembly 200 is configured as Figure 4 the frame shape shown in Figure 3The five-link structure composed of the seat frame side plate 230, the first link 210, the second link 220, the third link 250, and the vertical plate 240 as shown.

[0074] The first driving mechanism 510 may include a motor, wherein the output shaft of the motor is connected to the first link 210 or the second link 220 to drive the first link 210 or the second link 220 to rotate, so as to rotate the seat frame assembly to the folded position. In some embodiments, the first driving mechanism 510 may include a first transmission member 511 extending substantially along the seat frame side plate 230 and driven by a motor, and the first transmission member 511 is connected to the first link 210 or the second link 220. In the illustrated embodiment, the first transmission member 511 is configured as a rack and is connected to the second link 220. When the first transmission member 511 is driven by the motor, the second link 220 is driven to rotate through the movement of the rack, so as to rotate the seat frame assembly to the folded position.

[0075] Advantageously, the seat frame assembly 200 is separated from the backrest assembly 300, and the backrest assembly 300 may be pivotally connected to the side shift slide rail 531. For example Figure 9A As shown, the backrest assembly 300 is pivotally connected to the backrest bracket 310, and the backrest bracket 310 is connected to the vertical plate 240 and separated from the seat frame assembly 200, which makes the movement of the seat frame assembly 200 independent of the forward flipping and folding or backward flipping movement of the backrest assembly 300, and there will be no interference between them. Especially when the seat frame assembly 200 is folded by the first driving mechanism 510, the seat frame assembly 200 can rotate forward relative to the side shift slide rail 531 while the backrest assembly 300 is folded downward to be closer to the side shift slide rail 531, providing more folding space for the backrest assembly 300, so that the folded seat frame can present a relatively flat surface. For example, the angle between the backrest assembly 300 and the seat frame assembly 200 is less than 5 degrees, which will be described in more detail below.

[0076] The third driving mechanism 530 is attached to the side shift slide rail 531 and can move along the side shift slide rail 531, that is, the third driving mechanism 530 moves horizontally or left and right along the side shift slide rail 531 as a whole. In some embodiments, the third driving mechanism 530 includes a motor and a gearbox connected to the side shift slide rail 531. One end of the gearbox is connected to the motor through a flexible shaft, and the other end is connected to a lead screw arranged in the side shift slide rail 531. The motor drives the gearbox to move relative to the lead screw, so that the seat frame assembly 200 moves along the side shift slide rail 531 in the side shift direction Y.

[0077] In the illustrated embodiment, the first link 210 is farther from the backrest assembly 300 than the second link 220, and the second driving mechanism 520 drives the rotation of the seat frame assembly 200 relative to the side shift slide rail 531 mainly to realize the zero-pressure lift of the end of the seat frame assembly 200 close to the front of the vehicle.

[0078] As described above, in the folded posture, the seat frame assembly 200 can advantageously provide more folding space for the backrest assembly 300. This requires that when the seat frame assembly 200 realizes the folding function, it will not interfere with its own drive mechanism and the corresponding link assembly. When there is a side shift mechanism, the situation of component interference needs to be avoided especially.

[0079] For this reason, Figures 2 to 15 In an embodiment shown, the third link 250 is connected to the second drive mechanism 520 through a transmission mechanism. In the vertical direction Z, the position of the second drive mechanism 520 is lower than the position of the third drive mechanism 530, that is, as Figure 3 shown, the second drive mechanism 520 is located below the third drive mechanism 530 to avoid interference between the third drive mechanism 530 and the second drive mechanism 520 when the third drive mechanism 530 moves along the side shift slide rail 531 in the side shift direction Y together with the seat frame assembly 200. Advantageously, in the embodiment shown, the second drive mechanism 520 is installed on the lower slide rail 533 of the side shift slide rail 531, and the third drive mechanism 530 is installed on the upper slide rail 532 of the side shift slide rail 531 and can move relative to the lower slide rail 533. That is, the second drive mechanism 520 of this embodiment does not move along with the seat frame assembly 200 during the movement of the seat frame assembly 200 along the side shift slide rail 531.

[0080] In this case, the third link 250 is connected to the transmission mechanism through a connecting rod 251. Specifically, in combination with Figures 4 to 6A the embodiment shown, the transmission mechanism includes a connecting member 252 connected to the connecting rod 251, a transfer piece 272 pivotally connected to the second drive mechanism 520, and a linkage rod 271. In Figure 6A the embodiment shown, the linkage rod 271 is fixedly connected to the transfer piece 272 and slidably connected to the connecting member 252. Optionally, in Figure 6B another embodiment shown, the linkage rod 271 is fixedly connected to the connecting member 252 and slidably connected to the transfer piece 272. Specifically, in some embodiments, a chute 260 is provided on the connecting member 252, as Figure 6A shown, or a chute 260 is provided on the transfer piece 272, as Figure 6B shown. In this way, when the seat frame assembly 200 moves along the side shift slide rail 531, the connecting member 252 moves relative to the linkage rod 271 and then relative to the transfer piece 272 ( Figure 6A ), or the connecting member 252 together with the linkage rod 271 moves relative to the transfer piece 272 ( Figure 6B)。Regardless of the arrangement, when the second driving mechanism 520 drives the adapter plate 272 to rotate, it can drive the third link 250 to rotate, so that the third link 250 can transmit the driving force of the second driving mechanism 520 from below the third driving mechanism 530 to the first link 210. In this way, in a limited space, the driving force of the second driving mechanism 520 with a sunken structure is advantageously transmitted to the first link 210 in a sliding hinge manner through a simple structure and fewer components, effectively and reliably solving the problem that the second driving mechanism 520 sinks and cannot smoothly achieve zero-pressure lifting in the case of side shift, and achieving reliable transmission of the driving force while obtaining stable and reliable movement of related components. In addition, due to the sunken layout of the second driving mechanism, the folding action of the backrest assembly will not interfere with the second driving mechanism, so it can be folded forward to an angle less than 5 degrees with the seat frame assembly, which is convenient for splicing with the rear seat to achieve the large bed scenario.

[0081] In some embodiments, the second driving mechanism 520 can be fixedly connected to the lower slide rail 533 of the side shift slide rail 531 through the mounting bracket 521, and the adapter plate 272 is pivotally connected to the mounting bracket 521, so that the second driving mechanism 520 can drive the adapter plate 272 to rotate relative to the mounting bracket 521.

[0082] In some embodiments, the second driving mechanism 520 includes a motor 522 and a second transmission member driven by the motor 522, and the second transmission member is driven to drive the adapter plate 272 and then the third link 250 and the first link 210 to rotate. As an option, the second transmission member can include any one of an angle adjuster, a lead screw, a rack, and a toothed plate. Figures 2 to 12B In the illustrated embodiment, the second driving mechanism 520 can be configured as a push rod motor, including a lead screw 523 connected to the motor 522, and a push rod threadedly connected to the lead screw. The push rod is pivotally connected to the adapter plate 272, so that the motor 522 drives the lead screw 523 to rotate and drives the push rod to move on the lead screw 523 to rotate the adapter plate 272.

[0083] The following combines Figures 7A to 12B to describe the actions and functions achieved by the seat frame with the above structure in different postures.

[0084] First, refer to Figure 7A and Figure 7B , corresponding to Figure 2 and Figure 3 The design postures shown. In the design posture, the angle between the backrest assembly 300 and the seat frame assembly 200 is approximately 100 to 120 degrees, and the third link 250 and the transmission mechanism (connecting member 252, linkage rod 271, and adapter plate 272) are in the initial state. At this time, the seat is available for normal occupancy by the occupant.

[0085] When the seat backrest needs to be folded forward to form a bed with the rear seat, especially when the two seats move closer to each other laterally as shown in Figure 8A and Figure 8B to achieve the large bed function, the backrest assembly 300 rotates counterclockwise and folds as shown in Figure 9A . At the same time, the first link 210 and the second link 220 also rotate counterclockwise relative to the lateral shift slide rail 531, and the seat frame assembly 200 shifts laterally along the lateral shift direction Y, as shown in Figure 10A and Figure 10B . At this time, the third link 250 only shifts laterally along the lateral shift direction Y. Since the second drive mechanism 520 is located below the third drive mechanism 530, it provides more space for the folding of the seat frame assembly 200 without interfering with the movement of the third drive mechanism 530 along the lateral shift direction Y. In this way, after the backrest assembly 300 and the seat frame assembly 200 are folded, the included angle between the backrest assembly 300 and the seat frame assembly 200 can reach less than 5 degrees, enabling the large bed scenario to meet the comfort requirements of the occupants.

[0086] When the seat backrest needs to be flipped backward to achieve a lying flat posture, especially when the two seats move closer to each other laterally as shown in Figure 11A and Figure 11B to achieve the double bed function, the backrest assembly 300 flips clockwise as shown in Figure 12A . In this case, two postures can be achieved according to different requirements. For example, in the separate lying flat posture shown in Figure 11B , at this time, the third link 250 and the transmission mechanism can only shift laterally along the lateral shift direction Y as shown in Figure 10B . Or, the second drive mechanism 520 drives the seat frame assembly 200 to rotate relative to the lateral shift slide rail 531 to achieve the zero-pressure posture. As shown in Figures 12A to 13A , when starting the zero-pressure, under the drive of the second drive mechanism 520, for example, the adapter plate 272 is driven to rotate in the clockwise direction in the figure, and then drives the linkage rod 271, the connecting rod 251, and the fixedly connected third link 250 to rotate in the same direction. The downward movement of the linkage rod 271 causes the connecting rod 251 and the fixedly connected third link 250 to move upward, thereby lifting the first link 210 upward. Compared with the initial state, the front end of the seat frame assembly 200 is lifted by, for example, 10 to 20 degrees. The seat can be adapted to ergonomics to provide uniform and comfortable support for the legs of the occupants, reduce the body pressure of the occupants, and improve the comfort. At the same time, the third drive mechanism 530 drives the seat frame assembly 200 to move along the lateral shift direction Y, and can move the two seats closer to achieve the double bed function shown in Figure 11A .

[0087] Figure 14 and Figure 15 respectively exemplarily show other optional ways of the second drive mechanism. Figure 14Among them, the second driving mechanism may include a motor, a gear 524 connected to the output shaft of the motor, and a rack 525 connected to the adapter plate 272. The gear 524 meshes with the rack 525. When the motor drives the gear 524 to rotate, the adapter plate 272 is driven to rotate through the movement of the rack 525. Figure 15 Among them, the second driving mechanism includes a motor, a gear 524 connected to the output shaft of the motor, and a toothed plate 526 connected to the adapter plate 272. The gear 524 meshes with the toothed plate 526. When the motor drives the gear 524 to rotate, the adapter plate 272 is driven to rotate through the rotation of the toothed plate 526. In these two embodiments, each connecting rod and transmission mechanism of the seat frame assembly 200 can adopt the above-described manner and achieve the corresponding driving force transmission, which will not be elaborated here.

[0088] Figures 16 to 23C A seat frame assembly of another embodiment is shown. The difference from the above embodiment is that the second driving mechanism 520 is arranged above the third driving mechanism 530. In this way, the second driving mechanism 520 also does not interfere with the movement of the third driving mechanism 530 together with the seat frame assembly along the side shift slide rail in the side shift direction Y, and can provide more space for the folding of the seat frame assembly.

[0089] Combined Figures 16 to 19 , for the sake of simplicity, components that are the same as or similar to those in the above embodiment will not be elaborated. In this embodiment, the second driving mechanism 520 is fixedly installed on the vertical plate 240, and the vertical plate 240 is fixedly connected to the upper slide rail 532 of the side shift slide rail 531. It can be imagined that the second driving mechanism 520 can also be fixedly installed on the upper slide rail 532. The third driving mechanism 530 is installed on the lower slide rail 533 of the side shift slide rail 531 and can still move along the side shift slide rail 531, only relative to Figure 4 the embodiment shown is sunken below the side shift slide rail 531. It should be understood that the seat cushion has a sinking limit surface P, and the sinking limit surface P refers to the upper surface of the upper slide rail 532. As Figure 20A shown, it should be ensured that the second driving mechanism 520 cannot extend upward beyond the sinking limit surface P.

[0090] The third connecting rod 250 is pivotally connected to the vertical plate 240 through an angle adjuster 290, and is also configured to transmit the driving force of the second driving mechanism 520 to the first connecting rod 210. Specifically, the third connecting rod 250 is fixedly connected to the movable disk in the angle adjuster 290, and the vertical plate 240 is fixedly connected to the fixed disk in the angle adjuster 290.

[0091] In this embodiment, the second driving mechanism 520 includes a direct drive motor. The direct drive motor is connected to the angle adjuster 290 through a synchronizing rod 253 to drive the movable disk of the angle adjuster 290 to rotate relative to the fixed disk, thereby driving the third link 250 to rotate relative to the vertical plate 240. Thus, the third link 250 can transmit the driving force of the second driving mechanism 520 to the first link 210.

[0092] Figures 20A to 20C Exemplarily shown respectively using Figure 16 The actions and functions achieved by the seat frame constructed in the shown embodiment in different postures.

[0093] Similarly, Figure 20A Corresponding to the design posture. The third link 250 and the angle adjuster 290 are in the initial state, and at this time the seat is available for the occupant to sit normally. When the seat back needs to be folded forward and shifted sideways to achieve the big bed function, the backrest assembly 300 rotates and folds counterclockwise as Figure 20B shown, and at the same time the seat frame assembly 200 rotates and folds in the same direction relative to the side shift slide rail 531 and shifts in the side shift direction. When the seat back needs to be flipped backward and shifted sideways to achieve the double bed function, the backrest assembly 300 flips clockwise as Figure 20C shown. At this time, the movable disk in the angle adjuster 290 of the second driving mechanism rotates clockwise relative to the fixed disk and drives the third link 250 to move upward, thereby lifting the first link 210 upward to provide the zero pressure function.

[0094] Figures 21A to 23C Exemplarily shown respectively other alternative ways of the second driving mechanism, and the corresponding actions and functions achieved will not be elaborated. Figures 21A to 21C In the shown way, the second driving mechanism may include a motor, a gear 524 connected to the output shaft of the motor, and a toothed plate 526 meshing with the gear 524 and connected to the third link 250. When the motor drives the gear 524 to rotate, the third link 250 is driven to rotate through the rotation of the toothed plate 526. Figures 22A to 22C In the shown way, the second driving mechanism may include a motor, a gear 524 connected to the output shaft of the motor, and a rack 525 meshing with the gear 524 and connected to the third link 250. When the motor drives the gear 524 to rotate, the third link 250 is driven to rotate through the movement of the rack 525. Figures 23A to 23C In the shown way, the second driving mechanism may include a motor, a lead screw 523 connected to the motor, and the lead screw 523 is pivotally connected to the third link 250 to drive the third link 250 to rotate.

[0095] Regardless of the structure or layout, the seat frame of the present invention integrates the functions of lateral movement, folding and zero pressure in a limited space, and obtains a larger folding space under the premise of avoiding interference between components, so as to meet various application scenarios of passengers, such as a large bed or a double bed. According to different needs, the seat with the seat frame of the present invention can reliably meet the diversified adjustment requirements, while having both stability and comfort.

[0096] It should be understood here that the embodiments shown in the figures only show the optional structure, shape, size and arrangement of the various optional components of the seat frame according to the present disclosure, but they are only illustrative and not restrictive. Other shapes, sizes and arrangements may also be adopted without departing from the concept and scope of the present disclosure.

[0097] It should be noted that the present disclosure (e.g., disclosed concepts, etc.) has been described in the specification of this patent document and / or illustrated in the drawings according to exemplary embodiments; the embodiments of the present disclosure are presented only by way of example and are not intended to limit the scope of the present disclosure. The structure and / or arrangement of the elements of the disclosed concepts embodied in the present disclosure as described in the specification and / or illustrated in the drawings are merely illustrative. Although the exemplary embodiments of the present disclosure have been described in detail in this patent document, it is readily understood by those of ordinary skill in the art that equivalents, modifications, changes, etc. of the subject matter of the exemplary embodiments and alternative embodiments are possible and are considered to be within the scope of the present disclosure; all of these subject matters (e.g., modifications, changes, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present disclosure. It should also be noted that various / other modifications, changes, substitutions, equivalents, changes, omissions, etc. may be made in the configuration and / or arrangement of the exemplary embodiments (e.g., in terms of concepts, designs, structures, devices, forms, assemblies, constructions, means, functions, systems, processes / methods, steps, the order of process / method steps, operations, operating conditions, performance, materials, compositions, combinations, etc.). ) without departing from the scope of the present disclosure; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present disclosure. The scope of the present disclosure is not intended to be limited to the subject matter (e.g., details, structures, functions, materials, behaviors, steps, sequences, systems, results, etc.) described in the specification and / or drawings of this patent document. Considering that the claims of this patent document will be appropriately interpreted as covering the full scope of the subject matter of the present disclosure (e.g., including any and all such modifications, variations, embodiments, combinations, equivalents, etc.); it should be understood that the terms used in this patent document are intended to provide a description of the subject matter of the exemplary embodiments, and not as a limitation on the scope of the present disclosure.

[0098] It should also be noted that, according to the exemplary embodiments, the present disclosure may include conventional technologies (e.g., technologies implemented and / or integrated in the exemplary embodiments, modifications, variations, combinations, equivalents), or may include any other applicable technologies (present and / or future) having the ability to perform the functions and processes / operations described in the specification and / or illustrated in the figures. All such technologies (e.g., technologies implemented in the form of embodiments, modifications, variations, combinations, equivalents, etc.) are considered to be within the scope of the present disclosure of this patent document.

Claims

1. A seat frame for a vehicle, characterized in that: The seat frame includes a seat frame assembly, a backrest assembly and a side sliding rail, wherein the seat frame also includes a driving mechanism, and the driving mechanism includes: A first driving mechanism, capable of driving the seat frame assembly to rotate relative to the side sliding rail to a folded position; A second driving mechanism can drive the seat frame assembly to rotate relative to the side shift slide rail to a zero pressure position; The third driving mechanism can drive the seat frame assembly to move to a lateral position along the lateral slide rail in the lateral direction.

2. The seat frame of a vehicle according to claim 1, characterized in that: The seat frame assembly includes a seat frame side plate, a vertical plate fixedly connected to the upper slide rail of the side shift slide rail, and a pair of connecting rod assemblies arranged opposite to each other, each connecting rod assembly includes a first connecting rod and a second connecting rod pivotally connected to the seat frame side plate respectively, and a third connecting rod pivotally connected to the first connecting rod, the second connecting rod is pivotally connected to the vertical plate, and the third connecting rod can rotate relative to the vertical plate.

3. The seat frame of a vehicle according to claim 2, characterized in that: The two third connecting rods of the pair of connecting rod assemblies are fixedly connected via a connecting rod, and the connecting rod is pivotally connected to the vertical plate.

4. The seat frame of a vehicle according to claim 3, characterized in that: The third connecting rod is connected to the second driving mechanism through a transmission mechanism, and the position of the second driving mechanism in the vertical direction is lower than that of the third driving mechanism to avoid interference with the second driving mechanism when the third driving mechanism moves together with the seat frame assembly along the lateral sliding rail in the lateral moving direction.

5. The seat frame of a vehicle according to claim 4, characterized in that: The transmission mechanism includes a connecting member fixedly connected to the connecting rod, an adapter plate pivotally connected to the second driving mechanism, and a linkage rod fixedly connected to one of the connecting member and the adapter plate and slidably connected to the other of the connecting member and the adapter plate; wherein, when the second driving mechanism drives the adapter plate to rotate, it drives the third connecting rod to rotate, and when the third driving mechanism drives the third connecting rod to move in the lateral displacement direction, it drives the connecting member to move in the lateral displacement direction relative to the adapter plate.

6. The seat frame of a vehicle according to claim 5, characterized in that: A slide groove is provided on one of the connecting member and the adapter plate, and the linkage rod passes through the slide groove and is fixedly connected to the other of the connecting member and the adapter plate.

7. The seat frame of a vehicle according to claim 6, characterized in that: A shaft sleeve is arranged on the linkage rod or in the slide groove.

8. The seat frame of a vehicle according to claim 5, characterized in that: The second driving mechanism is mounted on a mounting bracket fixedly connected to the lower sliding rail of the lateral sliding rail, the adapter plate is pivotally connected to the mounting bracket, and the second driving mechanism drives the adapter plate to rotate relative to the mounting bracket.

9. The seat frame of a vehicle according to claim 5, characterized in that: The second driving mechanism includes a motor, a screw connected to the motor, and a push rod threadedly connected to the screw, the push rod is pivotally connected to the adapter plate, the motor drives the screw to rotate and drives the push rod to move on the screw to rotate the adapter plate.

10. The seat frame of a vehicle according to claim 5, characterized in that: The second driving mechanism includes a motor, a gear connected to the output shaft of the motor, and a rack connected to the adapter plate, the gear meshes with the rack, and the motor drives the gear to rotate and drives the adapter plate to rotate through the movement of the rack.

11. The seat frame of a vehicle according to claim 5, characterized in that: The second driving mechanism includes a motor, a gear connected to the output shaft of the motor, and a toothed plate connected to the adapter plate, the gear meshing with the toothed plate, the motor drives the gear to rotate and drives the adapter plate to rotate through the rotation of the toothed plate.

12. The seat frame of a vehicle according to claim 4, characterized in that: The second driving mechanism is installed on the lower slide rail of the lateral sliding rail, and the third driving mechanism is installed on the upper slide rail of the lateral sliding rail.

13. The seat frame of a vehicle according to claim 2, characterized in that: The third connecting rod is pivotally connected to the vertical plate through an angle adjuster.

14. The seat frame of a vehicle according to claim 13, characterized in that: The second driving mechanism includes a direct drive motor, and the direct drive motor is connected to the angle adjuster through a synchronization rod to drive the angle adjuster to rotate, thereby driving the third connecting rod to rotate relative to the vertical plate.

15. The seat frame of a vehicle according to claim 2, characterized in that: The second driving mechanism is fixedly mounted on the upper slide rail of the vertical plate or the lateral sliding rail, and the third driving mechanism is mounted on the lower slide rail of the lateral sliding rail.

16. The seat frame of a vehicle according to claim 2, characterized in that: The first driving mechanism includes a motor, a gear connected to the output shaft of the motor, and a rack connected to the first connecting rod or the second connecting rod, the gear is meshed with the rack, the motor drives the gear to rotate and drives the first connecting rod or the second connecting rod to rotate through the movement of the rack, so that the seat frame assembly rotates to the folded position.

17. The seat frame of a vehicle according to claim 1, characterized in that: The third driving mechanism includes a motor and a gear box. The gear box is connected to the motor through a flexible shaft and is connected to a screw rod arranged in the lateral sliding rail. The motor drives the gear box and the screw rod to move relative to each other, so that the seat frame assembly moves along the lateral sliding rail in the lateral shift direction.

18. The seat frame of a vehicle according to claim 1, characterized in that: The backrest assembly is pivotally connected to the lateral sliding rail so that the movement of the seat frame assembly and the movement of the backrest assembly are independent of each other.

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